综合物探在新兴都斛铜矿床勘查中的应用  

Application of comprehensive geophysical prospecting in exploration of the Duhu copper deposit in Xinxing County

作　　者：何俊飞 HE Jun-Fei(Guangdong Nonferrous Metals Geological Exploration Institution,Guangzhou510080,China)

机构地区：[1]广东省有色地质勘查院,广东广州510080

出　　处：《物探与化探》2024年第2期375-381,共7页Geophysical and Geochemical Exploration

基　　金：广东省省级地质勘查基金“广东省地质勘查与城市地质专项项目”(2019-09)。

摘　　要：由于单一物探方法具有多解性,在当前深部找矿中,综合物探方法得到了广泛的应用。在新兴都斛斑岩型铜矿区的地质勘查中,综合使用了高精度磁法和可控源音频大地电磁测深等地球物理方法,推测可控源音频大地电磁测深的中低阻异常和高精度磁法的低缓异常的组合是找矿的重要标志,异常查证取得较好的效果。在1000 m钻孔中,累积发现178.2 m铜、钼、银、金矿化体,铜的最高品位1.45%。综合物探方法的使用,在粤西斑岩型铜矿床的矿产勘查中具有重要的指导意义。Since individual geophysical exploration methods suffer the multiplicity of solutions,comprehensive geophysical prospecting has been extensively applied in deep ore prospecting presently.This study conducted the geological exploration of the Duhu porphyry copper deposit in Xinxing County using multiple geophysical methods such as high-precision magnetic survey and controlled source audio-frequency magnetotellurics(CSAMT).It was inferred that the CSAMT-derived medium-low resistivity anomalies and the low-gentle anomalies derived from the high-precision magnetic survey serve as significant prospecting indicators.Satisfactory results were achieved in follow-up verification of the anomalies.Specifically,copper,molybdenum,silver,and gold mineralized bodies with a cumulative thickness of 178.2 m were identified in a 1000 m deep borehole,with the highest copper grade of 1.45%.The application of comprehensive geophysical prospecting holds great significance in guiding the exploration of porphyry copper deposits in western Guangdong.

关 键 词：都斛铜矿床 高精度磁法 可控源音频大地电磁测深 斑岩型铜矿 

分 类 号：P631[天文地球—地质矿产勘探]